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| <title>Preface</title><link rel="stylesheet" type="text/css" href="css/hc-tutorial.css"><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><link rel="home" href="index.html" title="HttpClient Tutorial"><link rel="up" href="index.html" title="HttpClient Tutorial"><link rel="prev" href="index.html" title="HttpClient Tutorial"><link rel="next" href="fundamentals.html" title="Chapter 1. Fundamentals"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div xmlns:fo="http://www.w3.org/1999/XSL/Format" class="banner"><a class="bannerLeft" href="http://www.apache.org/" title="Apache Software Foundation"><img style="border:none;" src="images/asf_logo_wide.gif"></a><a class="bannerRight" href="http://hc.apache.org/httpcomponents-client-ga/" title="Apache HttpComponents Client"><img style="border:none;" src="images/hc_logo.png"></a><div class="clear"></div></div><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Preface</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="index.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="fundamentals.html">Next</a></td></tr></table><hr></div><div class="preface" title="Preface"><div class="titlepage"><div><div><h2 class="title"><a name="preface"></a>Preface</h2></div></div></div> |
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| <p> |
| The Hyper-Text Transfer Protocol (HTTP) is perhaps the most significant protocol used on the |
| Internet today. Web services, network-enabled appliances and the growth of network computing |
| continue to expand the role of the HTTP protocol beyond user-driven web browsers, while |
| increasing the number of applications that require HTTP support. |
| </p> |
| <p> |
| Although the java.net package provides basic functionality for accessing resources via HTTP, |
| it doesn't provide the full flexibility or functionality needed by many applications. |
| HttpClient seeks to fill this void by providing an efficient, up-to-date, and feature-rich |
| package implementing the client side of the most recent HTTP standards and recommendations. |
| </p> |
| <p> |
| Designed for extension while providing robust support for the base HTTP protocol, HttpClient |
| may be of interest to anyone building HTTP-aware client applications such as web browsers, web |
| service clients, or systems that leverage or extend the HTTP protocol for distributed |
| communication. |
| </p> |
| <div class="section" title="1. HttpClient scope"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="d5e20"></a>1. HttpClient scope</h2></div></div></div> |
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| <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"> |
| <p> |
| Client-side HTTP transport library based on <a class="ulink" href="http://hc.apache.org/httpcomponents-core/index.html" target="_top">HttpCore</a> |
| </p> |
| </li><li class="listitem"> |
| <p> |
| Based on classic (blocking) I/O |
| </p> |
| </li><li class="listitem"> |
| <p> |
| Content agnostic |
| </p> |
| </li></ul></div> |
| </div> |
| <div class="section" title="2. What HttpClient is NOT"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="d5e30"></a>2. What HttpClient is NOT</h2></div></div></div> |
| |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"> |
| <p> |
| HttpClient is NOT a browser. It is a client side HTTP transport library. |
| HttpClient's purpose is to transmit and receive HTTP messages. HttpClient will not |
| attempt to cache content, execute javascript embedded in HTML pages, try to guess |
| content type, or reformat request / redirect location URIs, or other functionality |
| unrelated to the HTTP transport. |
| </p> |
| </li></ul></div> |
| </div> |
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